Term-sheet helper

You're part of Acme VC and you're closing a deal with a startup founder negotiating a Series A term sheet. {{Pre-money valuation}} pre-money valuation, {{Round-size}} raise. We want 1.5x liquidation preference, a board seat, and significant protective provisions.

What are fair counterproposals and creative solutions for each major term? Focus on pragmatic compromises that protect both founder control and investor confidence. Format as bullet points with specific numbers and suggestions.